North Dakota State University
In this paper, the authors tackle the problem of Virtual Machine (VM) placement onto physical servers to jointly optimize two objective functions. The first objective is to minimize the total energy spent within a cloud due to the servers that are commissioned to satisfy the computational demands of VMs. The second objective is to minimize the total network overhead incurred due to: communicational dependencies between VMs and the VM migrations performed for the transition from an old assignment scheme to a new one. They study different methodologies for solving the aforementioned problem.